Pump attachment for drilling or boring machinery.



N0.7so,154. l l TATBNTB'D'JUNE 2, 1903.1

` A. PONTENTIBLD. A .PUMP ATTACHMENT POR DRILLINGr 0N BORING MACHINERY.

A.'API1'JI0ATI0N FILED .IU-'LY 2.5, 1902.' A

.No MODEL. 2 smsrssn'nm 1.

No. 730,154. PATBNTED JUNE 2,1903.v A. PORTER-FIELD.

0R DRILLING ORBORING MACHINERY.

APPLICATION IILED JULY 25, 1902.

PUMP ATTACHMENT P yNo MODEL. 2 SHEETS-'SHEET 2.

l we mams runs co Puomutm... wmmaron. u. c

UNITED STATES' Patented J une 2, 1903.

PATENT- OFFICE.

ALEXANDER PORTERFIELD, OF DUMBARTON, SCOTLAND;

SPECIFICATION forming part ofy Letters Patent No. r'730,1541, dated .Tune 2, 1903.-

Appiition filed July 25,1902. serial No. 117,001. uio modem i To all whom, t may concern,.-

Be it known that I, ALEXANDER PORTER- FIELD, a subject of the King of Great Britain and Ireland, and a resident of Dumbarton, in the county of Dumbarton, Scotland, (whose postal address is Oree Bank, Dumbarton, Scotland,) have invented an Improved Pump Attachment for Drilling or Boring Machinery, (for which I have applied for British Patent No. 512, dated January 8, 1902,) of which the following is a specification.

My said invention has for its object to provide a pump attachment for drilling` or boring machinery, such that the power used to actuate the tool can also be used to work the pump, and thus givev a constant supply of water, oil, or the like, which will be injected with considerable force into the hole or recess being out by the drill.

My improvements are shown on an accompanying sheet of explanatory drawings to be hereinafter referred to, in which drawings- Figure l is a plan, Fig. 2 an end elevation, Fig. 3 a sectional side elevation, and Fig. et is a view,of a drill provided with my improvement. Y

As shown in the drawings, the pump attachment has a barrel or chamber preferably made in two parts A B, connected together by a coupling C, the part B being made with a bracket D, which can be secured by the nuts E, usually employed to hold on the casing-cover F of the pneumatic tool, a small portion only of which is seen and which is of the known form having` pneumatically-actuated pistons to rotate the spindle carrying the drill or boring-tool. An additional bolt and nut G may also be employed, if desired, to assist in holding` the bracket D to the side of the tool, or the barrel A B may be otherwise secured to the casing of the'tool, so that the end of a plunger H, which works in the barrel, is opposite to and projects into one or other of the openings in the casing, through which the air exhausts from the hollow pistonvalve (not shown) employed in connection with the pneumatically-actuated pistons of the tool. The end of the plunger H is hollow and is screwed into or otherwise attached to the hollow piston-valve, and the air exhausts through holes J, formed through the side of the hollow end of the plunger H; also through holes K in the part B of vthe barrel. The plunger barrel communicates through an opening L with a valve-chest M, in which works a supply and discharge lift-valve N P and which has an inlet Q, connected to the supply of water or the like, preferably by a eXible pipe R, having a rose S at its lower end. The valve-chest M has also a discharge connection T, capable of adjustment by the coupling U, so that it can be turned in any required direction. Instead of or in addition to the adjustment-coupling U two or more discharge-openings may be formed in the valve-chest M, to one of which the discharge connection T may be secured, the other or others being closed by a plug V or plugs.

When the tool is in use, the'plunger H, reciprocating with the piston-valve of the tool, actuates the supply and discharge lift-valves N P so as to draw water or the like into the valve-chest M and ejects it through the discharge connection T with considerable force into the hole or recess being drilled or bored. The lift of the valves N IJ is regulated by the inwardly-proj ecting stem W on the under side of the cover X ofthe valve-chest M, and it is to be understood that instead of such valves any other suitable known form of sup ply and discharge capable of being actuated by a reciprocating plunger may be adopted and that such plunger may be actuated from any reciprocating part of a drilling or boring machine. I

IVhat I claim as my invention isl. A drilling and boring machine having a rotary drill-spindle, a motor-casing through which the spindle passes, a reciprocating actuating-piston mounted in the casing, and a pump mounted on said casing and operatively connected to the reciprocating piston, substantially as described. 4

2. The combination of a pneumatic drilling or boring machine, a reciprocating pistonvalvey therein, a pump-barrel, a bracket thereon for attachment to the machine opposite an air-exhaust opening in the casing,

a plunger in Such barrel having a hollowend projecting through the exhaust-opening and IOO In testimony whereof I have signed my name to this specification in the presence of tWo subscribing' Witnesses.

ALEXANDER PORTERFIELD.

secured to the reciprocating piston, air-exhaust holes formed through the plunger and pump-barrel, a valve-chest attached to the pump-barrel, supply and discharge Valves 5 therein actuated by the plunger, and liquid XVitnesses:

inlet and discharge connections to and from the Valve-chest substantially as described.

VVILFRED HUNT, GEORGE PATTERSON. 

